2-Decarboxy-2-tetrazolyl-6-keto-PG compounds

ABSTRACT

The present invention relates to novel 2-decarboxy-2-tetrazolyl-6-keto-PG compounds, which are useful for inducing a variety of prostacyclin-like pharmacological effects. Accordingly, these compounds are useful pharmacological agents for the same purposes for which prostacyclin is employed.

CROSS REFERENCE TO RELATED APPLICATION

The present application is a divisional application of copending application Ser. No. 959,400, filed Nov. 9, 1978; now U.S. Pat. No. 4,215,222 which is a divisional application of Ser. No. 819,857, filed July 28, 1977, now U.S. Pat. No. 4,158,667; which is a continuation-in-part of Ser. No. 725,548, filed Sept. 22, 1976, now abandoned; which is a continuation-in-part of Ser. No. 716,972, filed Aug. 23, 1976, now abandoned; which is a continuation-in-part of Ser. No. 655,110, filed Feb. 4, 1976, now abandoned.

BACKGROUND OF THE INVENTION

The present invention relates to novel 2-decarboxy-2-tetrazolyl-6-keto-PG compounds, which are useful for inducing a variety of prostacyclin-like pharmacological effects. Accordingly, these compounds are useful pharmacological agents for the same purposes for which prostacyclin is employed.

The essential material constituting a disclosure of the preparation and use of the novel compounds of the present invention are incorporated here by reference from U.S. Pat. No. 4,158,667.

SUMMARY OF THE INVENTION

The present invention particularly provides:

A compound of the formula ##STR1## wherein

W₁ is α--OH:β--H, α--H:β--OH, oxo, methylene, α--H:⊖--H, α--CH₂ OH:β--H;

wherein L is

(1) --(CH₂)_(d) --C(R₂)₂,

(2) --CH₂ --O--CH₂ --Y--, or

(3) --CH₂ CH═CH--,

wherein d is zero to 5, R₂ is hydrogen, methyl, or fluoro, being the same or different with the proviso that one R₂ is not methyl when the other is fluoro, and wherein Y is a valence bond, --CH₂ -- or --(CH₂)₂,

wherein Q is keto, α--H:β--H, α--OH:β--R₈ or α--R₈ :β--OH

wherein R₈ is hydrogen or alkyl of one to 4 carbon atoms, inclusive;

wherein R₅ and R₆ are hydrogen, alkyl of one to 4 carbon atoms, inclusive, or fluoro, being the same or different, with the proviso that one of R₅ and R₆ is fluoro only when the other is hydrogen or fluoro and the further proviso that neither R₅ nor R₆ is fluoro when Z is oxa (--O--); wherein Z represents an oxa atom (L13 O--) or C_(j) H_(2j), wherein C_(j) H_(2j) is a valence bond or alkylene of one to 9 carbon atoms, inclusive, with one to 6 carbon atoms, inclusive between CR₅ R₆ -- and the phenyl ring;

wherein T is alkyl of one to 4 carbon atoms, inclusive, fluoro, chloro, trifluoromethyl, or --OR₇ --, wherein R₇ is alkyl of one to 4 carbon atoms, inclusive, and s is zero, one, 2, or 3, with the proviso that not more than two T's are other than alkyl and when s is 2 or 3 the T's are either the same or different; and

wherein X is

(1) trans--CH═CH--,

(2) c is --CH═CH--,

(3) --CC--, or

(4) --CH₂ CH₂ --;

including the lower alkanoates thereof.

With regard to the divalent substituents described in the claims, e.g., Q and W₁, these divalent radicals are defined as α--R_(i) :β--R_(j), where R_(i) represents a substituent of the divalent moiety of the alpha configuration with respect to the cyclopentane and R_(j) represents a substituent of the divalent moiety of the beta configuration with respect to the cyclopentane ring. Accordingly, when Q is defined as α--OH:β--R₈, the hydroxy of the Q moiety is in the alpha configuration, i.e., as in prostacyclin, and the R₈ substituent is in the beta configuration. Not all carbon atoms to which such divalent moieties are attached to represent asymmetric centers. For example, when both valence bonds are to hydrogen (e.g., W₁ or Q is α--H:β--H), then no asymmetric center is present.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The present invention particularly relates to the following chemical compounds:

2-Decarboxy-2-tetrazolyl-6-keto-11β16-phenoxy-17,18,19,20-tetranor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-11-deoxy-16-phenoxy-17,18,19,20-tetranor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-13,14-didehydro-15(S)-16 phenoxy-17,18,19,20-tetranor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-13,14-didehydro-(15R)-16 -phenoxy-17,18,19,20-tetranor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-13,14-dihydro-16-phenoxy-17,18,19,20-tetranor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6,15-diketo-13,14-dihydro-16-phenoxy-17,18,19,20-tetranor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16-phenoxy-17,18,19,20-tetranor-PGF₁.alpha. ;

2-Decarboxy-2-tetrazolyl-6-keto-16-phenoxy-17,18,19,20-tetranor-PGF₁.alpha., 11,15-diacetate;

2-Decarboxy-2-tetrazolyl-6,15-diketo-16-phenoxy-17,18,19,20-tetranor-PGF.sub.1α ;

2-Decarboxy-2-tetrazolyl-6-keto-17-phenyl-18,19,20-trinor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-17-phenyl-18,19,20-trinor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-17-phenyl-18,19,20-trinor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-17-phenyl-18,19,20-trinor-cis-13-PGF₁.alpha. ;

2-Decarboxy-2-tetrazolyl-6-keto-17-m-trifluoromethylphenyl)-18,19,20-trinor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-17-m-chlorophenyl)-18,19,20-trinor-PGF.sub.1α ;

2-Decarboxy-2-tetrazolyl-6-keto-17-(p-fluorophenyl)-18,19,20-trinor-PGF.sub.1α ;

2-Decarboxy-2-tetrazolyl-6-keto-16,16-dimethyl-17-phenyl-18,19,20-trinor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16,16-difluoro-17-phenyl-18,19,20-trinor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16-(m-trifluoromethylphenoxy)-17,18,19,20-tetranor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16-(m-chlorophenoxy)-17,18,19,20-tetranor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16-(p-fluorophenoxy)-17,18,19,20-tetranor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16-(methyl-16-phenoxy-18,19,20-trinor-PGF.sub.1α ;

2-Decarboxy-2-tetrazolyl-6-keto-17-(m-trifluoromethylphenyl)-18,19,20-trinor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16-(m-chlorophenoxy)-17,18,19,20-tetranor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16-(p-fluorophenoxy)-17,18,19,20-tetranor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16-methyl-16-phenoxy-18,19,20-trinor-PGF.sub.1α ;

2-Decarboxy-2-tetrazolyl-6-keto-17-(m-trifluoromethylphenyl)-18,19,20-trinor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-17-(m-chlorophenyl)-18,19,20-trinor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-17-(m-fluorophenyl)-18,19,20-trinor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16,16-dimethyl-17-phenyl-18,19,20-trinor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16,16-difluoro-17-phenyl-18,19,20-trinor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16-(m-trifluoromethylphenoxy)-17,18,19,20-tetranor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16-(m-chlorophenoxy)-17,18,19,20-tetranor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16-methyl-16-phenoxy- 18,19,20-trinor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-17-(m-trifluoromethylphenyl)-18,19,20-trinor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-17-(m-chlorophenyl)-18,19,20-trinor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-17-(m-fluorophenyl)-18,19,20-trinor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16,16-dimethyl-17-phenyl-18,19,20-trinor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16,16-difluoro-17-phenyl-18,19,20-trinor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16-(m-trifluoromethylphenoxy)-17,18,19,20-tetranor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16-(m-chlorophenoxy)-17,18,19,20-tetranor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16-(p-fluorophenoxy)-17,18,19,20-tetranor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16-methyl-16-phenoxy-18,19,20-trinor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-17-(m-trifluoromethylphenyl)-18,19,20-trinor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-17-(m-chlorophenyl)-18,19,20-trinor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-17-(p-fluorophenyl)-18,19,20-trinor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16,16-dimethyl-17-phenyl-18,19,20-trinor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16,16-difluoro-17-phenyl-18,19,20-trinor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16-(m-trifluoromethylphenoxy)-17,18,19,20-tetranor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16-(m-chlorophenoxy)-17,18,19,20-tetranor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16-(p-fluorophenoxy)-17,18,19,20-tetranor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-16-methyl-16-phenoxy- 18,19,20-trinor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-17-phenyl- 18,19,20-trinor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-17-(m-trifluoromethylphenyl)-18,19,20-trinor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-17-(m-chlorophenyl-18,19,20-trinor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-17-(p-fluorophenyl)-18,19,20-trinor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-16,16-dimethyl-17-phenyl-18,19,20-trinor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-16,16-difluoro-17-phenyl-18,19,20-trinor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-16-phenoxy-17,18,19,20-tetranor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-16-(m-trifluoromethylphenoxy)-17,18,19,20-tetranor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-Keto-2,2-difluoro-16-(M-chlorophenoxy)-17,18,19,20-tetranor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-16-(p-fluorophenoxy)-17,18,19,20-tetranor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-16-methyl- 16-phenoxy-18,19,20-trinor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-17-phenyl-18,19,20-trinor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-17-(m-trifluoromethylphenyl)-18,19,20-trinor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-17-(m-chlorophenyl)-18,19,20-trinor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-17-(p-fluorophenyl)-18,19,20-trinor-13,14-didehydro-PGF₁ ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-16,16-dimethyl-17-phenyl-18,19,20-trinor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2,16,16-tetrafluoro-17-phenyl-18,19,20- trinor-13,14-didehydro-PGF₁α ;

2-Decarbocxy-2tetrazolyl-6-keto-2,2-difluoro-16-phenoxy-17,18,19,20-tetranor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-16-(m-trifluoromethylphenoxy)-17,18,19,20-tetranor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-16-(m-chlorophenoxy)-17,18,19,20-tetranor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-16-methyl-16-phenoxy-18,19,20-trinor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto,-2,2-difluoro-17-phenyl-18,19,20-trinor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-17-(m-trifluoromethylphenyl)-18,19,20-trinor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-17-(m-chloropheny)-18,19,20-trinor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-17-(p-fluorophenyl)-18,19,20-trinor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-16,16-dimethyl-17-phenyl-18,19,20trinor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2,16,16-tetrafluoro-17phenyl-18,19,20-trinor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-16-phenoxy-17,18,19,20-tetranor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-16-(m-trifluoromethylohenoxy)-17,18,19,20-tetranor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-16-(m-chlorophenoxy)-17,18,19,20-tetranor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-16-(p-fluorophenoxy)-17,18,19,20-tetranor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-16-methyl-16-phenoxy-18,19,20-trinor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-17-phenyl-18,19,20-trinor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-17-(m-trifluoromethylphenyl)-18,19,20-trinor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-17-(m-chlorophenyl)-18,19,20-trinor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-17-(p-fluorophenyl)-18,19,20-trinor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-16,16-dimethyl-17-phenyl-18,19,20-trinor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-17-phenyl-18,19,20-trinor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-diflouro-16-phenoxy-17,18,19,20-tetranor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-16-(m-trifluoromethylphenoxy)-17,18,19,20-tetranor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-16-(m-chlorophenoxy)-17,18,19,20-tetranor-cis-13PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-16-(p-fluorophenoxyl)-17,18,19,20-tetranor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-2,2-difluoro-16-methyl-16-phenoxy-18,19,20-trinor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-17-phenyl-18,19,20-trinor-PGF₁.alpha. ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-17-(m-trifluoromethylphenyl)-18,19,20-trinor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-17-(m-chlorophenyl)-18,19,20-trinor,PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16,16-dimethyl-17-phenyl-18,19,20-trinor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16,16-difluoro-17-phenyl-18,19,20-trinor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16-phenoxy-17,18,19,20-tetranor-PGF.sub.1α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16-(m-trifluoromethylphenoxy)-17,18,19,20-tetranor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16-(m-chlorophenoxy)-17,18,19,20-tetranor-PGF₁α ;

2;l -Decarboxy-2-tetrazolyl-6-keto-3-oxa-16-(p-fluorophenoxy)-17,18,19,20-tetranor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16-methyl-16-phenoxy-18,19,20-trinor-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-17-phenyl-18,19,20-trinor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-17-(m-trifluoromethyplhenyl)-18,19,20-trinor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-17-(m-chlorophenyl)-18,19,20-trinor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-17-(p-fluorophenyl)-18,19,20-trinor,13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16,16-dimethyl-17-phenyl-18,19,20-trinor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16,16-difluoro-17-phenyl-18,19,20-trinor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16-phenoxy-17,18,19,20-tetranor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16-(m-trifluoromethylphenoxy)-17,18,19,20-tetranor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16-(m-chlorophenoxy)-17,18,19,20-tetranor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16-methyl-16-phenoxy-18,19,20-trinor-13,14-didehydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-17-phenyl-18,19,20-trinor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl- b 6-keto-3-oxa-17-(m-trifluoromethylphenyl)-18,19,20-trinor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-17-(m-chlorophenyl)-18,19,20-trinor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-17-(p-fluorophenyl)-18,19,20-trinor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16,16-dimethyl-17-phenyl-18,19,20-trinor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16,16-difluoro-17-phenyl-18,19,20-trinor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16-phenoxy-;b 17,18,19,20-tetranor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16-(m-trifluoromethylphenyl)-17,18,19,20-tetranor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16-(m-chlorophenoxy)-17,18,19,20-tetranor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16-(p-fluorophenoxy)-17,18,19,20-tetranor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16-methyl-16-phenoxy-18,19,20-trinor-13,14-dihydro-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-17-phenyl-18,19,20-trinor-cis-13-PGF.sub.1α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-17-(m-trifluoromethylphenyl)-18,19,20-trinor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-17-(m-chlorophenyl)-18,19,20-trinor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-17-(p-fluorophenyl)-18,19,20-trinor-cis13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16,16-dimethyl-17-phenyl-18,19,20-trinor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16,16-difluoro-17-phenyl-18,19,20-trinor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16-phenoxy-17,18,19,20-tetranor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16-(m-trifluoromethylphenoxy)-17,18,19,20-tetranor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16-(m-chlorophenoxy)-17,18,19,20-tetranor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-(p-fluorophenoxy)-17,18,19,20-tetranor-cis-13-PGF₁α ;

2-Decarboxy-2-tetrazolyl-6-keto-3-oxa-16-methyl-16-phenoxy-18,19,20,-trinor-cis-13-PGF;hd 1α; and

2-Decarboxy-2-tetrazolyl-6-keto-17-phenyl-18,19,20-trinor-PGF₁α. 

I claim:
 1. A prostacyclin of formula ##STR2## wherein W₁ is α-OH:β-H, α-H:βOH, oxo, methylene, α-H:β-H, α-CH₂ OH:β-H;wherein L is (1) -(CH₂)_(d) -C(R₂)₂, (2) -CH₂ -O-CH₂ -Y-, or (3) -CH₂ CH═CH-, wherein d is zero to 5, R₂ is hydrogen, methyl, or fluoro, being the same or different with the proviso that one R₂ is not methyl when the other is fluoro, and wherein Y is a valence bond, -CH₂ - or -(CH₂)₂, wherein Q is keto, α-H:β-H, α-OH:βR₈ or α-R₈ :β-OH wherein R₈ is hydrogen or alkyl of one to 4 carbon atoms, inclusive; wherein R₅ and R₆ hydrogen, alkyl of one to 4 carbon atoms, inclusive, or fluoro, being the same or different, with the proviso that one of R₅ and R₆ is fluoro only when the other is hydrogen or fluoro and the further proviso that neither R₅ nor R₆ is fluoro when Z is oxa (-O-); wherein Z represents an oxa atom (-O-) or C_(j) H_(2j), wherein C_(j) H_(2j) is a valence bond or alkylene of one to 9 carbon atoms, inclusive, with one to 6 carbon atoms, inclusive, between CR₅ R₆ - and the phenyl ring; wherein T is alkyl of one to 4 carbon atoms, inclusive, fluoro, chloro, trifluoromethyl, or -OR₇ -, wherein R₇ is alkyl of one to 4 carbon atoms, inclusive, and s is zero or one; and wherein X is (1) trans-CH═CH-, (2) cis-CH═CH-, (3) -CC-, or (4) -CH₂ CH₂ -; including the lower alkanoates thereof. 